Torpedo Boats

Desertfox · April 02, 2020, 01:16:53 PM

Order of Battle

Ikazuchi class (1896)
24 in class, 11 SUNK 1912, ALL SCRAPPED

Akatsuki class (1900)
24 in class, 20 SUNK 1912

Kamikaze class (1904)
24 in class, 8 SUNK 1912, ~~6 DMG 66%, 2 DMG 25%, 7 DMG 5%~~ RECLASSIFIED AS DESTROYERS

Desertfox · April 08, 2020, 11:53:26 AM

24 Built

Ikazuchi, Japan Destroyer laid down 1896

Displacement:
300 t light; 309 t standard; 334 t normal; 354 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
(240.00 ft / 240.00 ft) x 22.00 ft x (5.40 / 5.61 ft)
(73.15 m / 73.15 m) x 6.71 m x (1.65 / 1.71 m)

Armament:
1 - 3.00" / 76.2 mm 45.0 cal gun - 13.62lbs / 6.18kg shells, 150 per gun
Breech loading gun in deck mount, 1896 Model
1 x Single mount on centreline, forward deck centre
5 - 2.00" / 50.8 mm 45.0 cal guns - 4.03lbs / 1.83kg shells, 150 per gun
Breech loading guns in deck mounts, 1896 Model
4 x Single mounts on sides, evenly spread
1 x Single mount on centreline, aft deck centre
Weight of broadside 34 lbs / 15 kg

Machinery:
Coal fired boilers, simple reciprocating steam engines,
Direct drive, 2 shafts, 5,239 ihp / 3,908 Kw = 25.00 kts
Range 1,200nm at 10.00 kts
Bunker at max displacement = 44 tons (100% coal)
Caution: Delicate, lightweight machinery

Complement:
38 - 50

Cost:
£0.041 million / $0.163 million

Distribution of weights at normal displacement:
Armament: 6 tons, 1.8 %
- Guns: 6 tons, 1.8 %
Machinery: 204 tons, 61.0 %
Hull, fittings & equipment: 84 tons, 25.1 %
Fuel, ammunition & stores: 34 tons, 10.2 %
Miscellaneous weights: 6 tons, 1.8 %
- On freeboard deck: 6 tons

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
72 lbs / 33 Kg = 5.3 x 3.0 " / 76 mm shells or 0.1 torpedoes
Stability (Unstable if below 1.00): 1.33
Metacentric height 0.9 ft / 0.3 m
Roll period: 10.0 seconds
Steadiness - As gun platform (Average = 50 %): 70 %
- Recoil effect (Restricted arc if above 1.00): 0.09
Seaboat quality (Average = 1.00): 0.84

Hull form characteristics:
Hull has a flush deck,
a normal bow and a cruiser stern
Block coefficient (normal/deep): 0.410 / 0.418
Length to Beam Ratio: 10.91 : 1
'Natural speed' for length: 15.49 kts
Power going to wave formation at top speed: 59 %
Trim (Max stability = 0, Max steadiness = 100): 83
Bow angle (Positive = bow angles forward): 0.00 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = length of deck as a percentage of waterline length):
Fore end, Aft end
- Forecastle: 30.00 %, 11.00 ft / 3.35 m, 7.00 ft / 2.13 m
- Forward deck: 30.00 %, 7.00 ft / 2.13 m, 7.00 ft / 2.13 m
- Aft deck: 25.00 %, 7.00 ft / 2.13 m, 7.00 ft / 2.13 m
- Quarter deck: 15.00 %, 7.00 ft / 2.13 m, 7.00 ft / 2.13 m
- Average freeboard: 7.48 ft / 2.28 m
Ship tends to be wet forward

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 202.2 %
- Above water (accommodation/working, high = better): 112.4 %
Waterplane Area: 3,270 Square feet or 304 Square metres
Displacement factor (Displacement / loading): 17 %
Structure weight / hull surface area: 17 lbs/sq ft or 85 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.50
- Longitudinal: 0.63
- Overall: 0.52
Extremely poor machinery, storage, compartmentation space
Adequate accommodation and workspace room
Ship has slow, easy roll, a good, steady gun platform
Poor seaboat, wet and uncomfortable, reduced performance in heavy weather

6t - 2 x 18" torpedo tubes

Desertfox · April 08, 2020, 11:54:13 AM

24 built, 2 knots faster

Akatsuki class, Japan Destroyer laid down 1900

Displacement:
331 t light; 342 t standard; 365 t normal; 384 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
(240.00 ft / 240.00 ft) x 22.00 ft x (5.90 / 6.10 ft)
(73.15 m / 73.15 m) x 6.71 m x (1.80 / 1.86 m)

Armament:
1 - 3.00" / 76.2 mm 45.0 cal gun - 13.62lbs / 6.18kg shells, 150 per gun
Quick firing gun in deck mount, 1900 Model
1 x Single mount on centreline, forward deck centre
5 - 2.00" / 50.8 mm 45.0 cal guns - 4.03lbs / 1.83kg shells, 150 per gun
Quick firing guns in deck mounts, 1900 Model
4 x Single mounts on sides, evenly spread
1 x Single mount on centreline, aft deck centre
Weight of broadside 34 lbs / 15 kg

Machinery:
Coal and oil fired boilers, complex reciprocating steam engines,
Direct drive, 2 shafts, 7,615 ihp / 5,681 Kw = 27.00 kts
Range 1,200nm at 10.00 kts
Bunker at max displacement = 42 tons (90% coal)
Caution: Delicate, lightweight machinery

Complement:
41 - 54

Cost:
£0.045 million / $0.180 million

Distribution of weights at normal displacement:
Armament: 7 tons, 1.9 %
- Guns: 7 tons, 1.9 %
Machinery: 226 tons, 62.0 %
Hull, fittings & equipment: 92 tons, 25.3 %
Fuel, ammunition & stores: 33 tons, 9.2 %
Miscellaneous weights: 6 tons, 1.6 %
- On freeboard deck: 6 tons

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
75 lbs / 34 Kg = 5.5 x 3.0 " / 76 mm shells or 0.1 torpedoes
Stability (Unstable if below 1.00): 1.24
Metacentric height 0.8 ft / 0.2 m
Roll period: 10.6 seconds
Steadiness - As gun platform (Average = 50 %): 70 %
- Recoil effect (Restricted arc if above 1.00): 0.10
Seaboat quality (Average = 1.00): 0.82

Hull form characteristics:
Hull has a flush deck,
a normal bow and a cruiser stern
Block coefficient (normal/deep): 0.410 / 0.417
Length to Beam Ratio: 10.91 : 1
'Natural speed' for length: 15.49 kts
Power going to wave formation at top speed: 63 %
Trim (Max stability = 0, Max steadiness = 100): 86
Bow angle (Positive = bow angles forward): 0.00 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = length of deck as a percentage of waterline length):
Fore end, Aft end
- Forecastle: 30.00 %, 11.00 ft / 3.35 m, 9.00 ft / 2.74 m
- Forward deck: 30.00 %, 9.00 ft / 2.74 m, 7.00 ft / 2.13 m
- Aft deck: 25.00 %, 7.00 ft / 2.13 m, 7.00 ft / 2.13 m
- Quarter deck: 15.00 %, 7.00 ft / 2.13 m, 7.00 ft / 2.13 m
- Average freeboard: 8.14 ft / 2.48 m
Ship tends to be wet forward

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 204.8 %
- Above water (accommodation/working, high = better): 112.3 %
Waterplane Area: 3,270 Square feet or 304 Square metres
Displacement factor (Displacement / loading): 15 %
Structure weight / hull surface area: 18 lbs/sq ft or 87 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.50
- Longitudinal: 0.87
- Overall: 0.53
Extremely poor machinery, storage, compartmentation space
Adequate accommodation and workspace room
Ship has slow, easy roll, a good, steady gun platform
Poor seaboat, wet and uncomfortable, reduced performance in heavy weather

6t - 2 x 18" torpedo tubes

Desertfox · April 08, 2020, 11:55:24 AM

24 built

Kamikaze, Japan Destroyer laid down 1904

Displacement:
429 t light; 445 t standard; 487 t normal; 520 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
(252.12 ft / 250.00 ft) x 24.00 ft x (7.10 / 7.41 ft)
(76.84 m / 76.20 m) x 7.32 m x (2.16 / 2.26 m)

Armament:
2 - 3.00" / 76.2 mm 45.0 cal guns - 13.62lbs / 6.18kg shells, 150 per gun
Quick firing guns in deck mounts, 1904 Model
2 x Single mounts on centreline, evenly spread
12 - 2.00" / 50.8 mm 45.0 cal guns - 4.03lbs / 1.83kg shells, 150 per gun
Quick firing guns in deck mounts, 1904 Model
4 x Triple mounts on sides, evenly spread
Weight of broadside 76 lbs / 34 kg

Armour:
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 1.00" / 25 mm - -

Machinery:
Coal and oil fired boilers, steam turbines,
Direct drive, 2 shafts, 8,936 shp / 6,666 Kw = 27.00 kts
Range 1,500nm at 10.00 kts
Bunker at max displacement = 74 tons (90% coal)
Caution: Delicate, lightweight machinery

Complement:
51 - 67

Cost:
£0.058 million / $0.230 million

Distribution of weights at normal displacement:
Armament: 14 tons, 2.8 %
- Guns: 14 tons, 2.8 %
Armour: 4 tons, 0.9 %
- Armament: 4 tons, 0.9 %
Machinery: 275 tons, 56.5 %
Hull, fittings & equipment: 112 tons, 23.0 %
Fuel, ammunition & stores: 57 tons, 11.8 %
Miscellaneous weights: 24 tons, 4.9 %
- Hull above water: 10 tons
- On freeboard deck: 14 tons

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
105 lbs / 47 Kg = 7.7 x 3.0 " / 76 mm shells or 0.2 torpedoes
Stability (Unstable if below 1.00): 1.23
Metacentric height 0.9 ft / 0.3 m
Roll period: 10.9 seconds
Steadiness - As gun platform (Average = 50 %): 72 %
- Recoil effect (Restricted arc if above 1.00): 0.17
Seaboat quality (Average = 1.00): 0.84

Hull form characteristics:
Hull has a flush deck,
a normal bow and a cruiser stern
Block coefficient (normal/deep): 0.400 / 0.409
Length to Beam Ratio: 10.42 : 1
'Natural speed' for length: 15.81 kts
Power going to wave formation at top speed: 63 %
Trim (Max stability = 0, Max steadiness = 100): 85
Bow angle (Positive = bow angles forward): 10.00 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = length of deck as a percentage of waterline length):
Fore end, Aft end
- Forecastle: 30.00 %, 12.00 ft / 3.66 m, 8.00 ft / 2.44 m
- Forward deck: 30.00 %, 8.00 ft / 2.44 m, 8.00 ft / 2.44 m
- Aft deck: 25.00 %, 8.00 ft / 2.44 m, 8.00 ft / 2.44 m
- Quarter deck: 15.00 %, 8.00 ft / 2.44 m, 8.00 ft / 2.44 m
- Average freeboard: 8.48 ft / 2.58 m
Ship tends to be wet forward

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 192.8 %
- Above water (accommodation/working, high = better): 106.0 %
Waterplane Area: 3,693 Square feet or 343 Square metres
Displacement factor (Displacement / loading): 27 %
Structure weight / hull surface area: 20 lbs/sq ft or 97 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.50
- Longitudinal: 0.88
- Overall: 0.53
Cramped machinery, storage, compartmentation space
Adequate accommodation and workspace room
Ship has slow, easy roll, a good, steady gun platform
Poor seaboat, wet and uncomfortable, reduced performance in heavy weather

10t - Short-range wireless
14t - 4 x 18" torpedo tubes

Torpedo Boats

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